How to test gRPC APIs?

I have been assigned to test a gRPC API (written in Golang) but I don't know how to go about testing it and I couldn't find any tutorials online for this type of testing. The only method that I can think of is to write unit tests to test the methods themselves but I would like to also test it with a client. For example, I have tested REST APIs in the past using JMeter as a client to send requests and verify the response data. Is there a method for testing gRPC APIs with a client or is unit testing the only way?